Dudley bartlett



(No Model.)

D. BARTLETT. PHOTOGRAPHIO PRINTING FRAME.

No. 437,843. Patented Oct. 7,1890.

W/TNESSES. waxy/a4.

ATTORNEY UNITED STATES PATENT OFFICE.

DUDLEY BARTLETT, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE E. 85 H. T. ANTHONY & COMPANY, OF NEIV YORK, N. Y.

PHOTOGRAPHlC-PRINTING FRAME.

SPECIFICATION forming part of Letters Patent No. 437,843, dated. October *7, 1890.

Application filed February 8, 1890.

To all whom it may concern.-

Be it known that I, DUDLEY BARTLETT, a citizen of the United States, and a resident of Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Printing-Frames, of which the following is a specification.

My invention relates to an improvement in printingframes; and it consists in the devices hereinafter set forth, whereby the curling up of the negative during inspection of the print is prevented, thus obviating an annoying and otherwise undesirable incidentin the use of printing-frames as now made.

In the drawings, the same reference-letters indicate the same parts in all the figures.

Figure 1 illustrates a top view, partly cut away, of my improved frame. Fig. 2 illustrates a section of the same. Fig. 3 illustrates 2o aperspective of the negative-confining frame.

A A A A are the several sides of the printing-frame.

B is the glass orequivalent transparent ma terial.

O is the pressure-board.

D D are the compressing-springs.

E E are the ears, under which the ends of the springs D D are sprung. All these parts are or may be the same as usual.

F is a frame, which may be square in shape, adapted to fit inside of the recess in the main frame, into which the pressure-board fits. It is made of thin and preferably, but not necessarily, of resilient material, metal preferred. 3 5 It rests upon the edges of the negative during use and holds it down. The paper upon which the print is to be made rests partly upon the frame F if it be so large as to eX- tend to the frame, and if not then it rests upon the back of the negative. In order that the pressure-board may take the properbearing on the paper and exert the proper pressure on all the parts involved, I either form a Serial No. 389,703, (No model.)

an eighth of an inch thick, more or less. The

elasticity and compressible quality of this material will compensate for the presence of the thin frame at the edges of the paper. The thin frame F may, if desired, be in the form of flanges attached to the glass or like plate.

The operation of the device is obvious. IVhen the hinged part of the pressure-board C is turned up for the purpose of inspecting the print, the paper or the felt, and the paper, if the felt be usedinstead of the rabbet, may be turned up to view the print the same as usual, and the negative will be held down. and prevented from curling up by the frame F, which holds it down.

It will at once appear to those who are skilled in this art that various modifications of my idea may be employed. I do not, there fore, limit myself to the details of construction shown and described.

I claim In a printing apparatus, a thin frame interposed between the paper and the negative, constructed and arranged to bear upon the edges of the negative, whereby it will be held down when the pressure-board and the paper are turned up, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 6th day of February, A. D. 1890.

DUDLEY BARTLETT.

Witnesses:

PHILLIPS ABBOTT, FREDERICK SMITH. 

